I don't know why it is happening but it is happeneing to me to so I assume it is something wrong with the whole site! I logged on and had a couplequestions to answer and got the same message. Give it an hour and see if its back to normal!

use your "find" key. II is two capital i's, not lowercase L's... I don't see anything wrong with this. I've seen it before, with zero's for the OO's, but again if you use your find key, that isn't the case here. I don't see any error...?